Apparatus for rarefying gases



Jan. 14, 1930. J. o. Bovms Y 1,743,653

' APPARATUS FOR RAREFYING GASES Original Filed Feb. 10, 1926 PatentedJan. 14, 1930 UNITED STATES JENS onrnn BOVING, or WESTMINSTER, EneLAnn'APPARATUS FOR RAREFYING GASES Original application filed February 10,1926, Serial No. 87,369, and in Great Britain February 27, 1925.

Divided and this application filed February 2, 1928. Serial No. 251,448.

This invention relates to hydraulic apparatus, working on the siphonprinciple, for rarefying gases. The chief object of the invention is todevise such an apparatus for use -when there is available a body ofwater, such level water, a downwardly extending dis-- charge conduitwhich is arranged at the other side of the dam and communlcates wlth thelower level water, said conduits communi- 7 effect, the same'will bemore fully described with reference to the accompanying drawing which isa sectional view showing a constructional form of my invention.

A is the upwardly extending supply conduit communicating with the highlevel water 1 and B is the downwardly extending discharge conduitcommunicating with the low level water 2, these conduits being formed inthe sides of a dam C (which separates the high level water 1 from thelow level water 2) so as to constitute a siphon. D is a chamber fromwhich gas (air forex ample) is to be withdrawn, and 01, dare inductionpipes which communicate with the interior of the chamber D and the freeends of which are situated, as shown, at the part where the conduits Aand B join each other. The portion of the dam between the two cons duitsis formed with one or more ports or sets of ports 6 which can be openedand closed atwill and which serve by the aid of one or more doors orvalves F operated by a hand wheel F to start the working of theapparatus. When the door or valve F is opened communication isestablished between the conduits A and B and therefore between the highlevel water 1 and the low level water 2. The water from the high levelrushes through the port Z) into the lower part of the discharge conduitB and in so doing entrains a certain amount of air from the upper partof the conduit B and the chamber D, thereby creating a small andsteadily increasing vacuum. This causes the water level to risein boththe conduit A and the conduit B and for an apparatus designed to give amoderate degree of vacuum in the chamber D the water level willeventually rise up to the top of the said conduits; the door or valve Fis then closed and the siphon action is thus established. Consequentlyair or gas is sucked from the chamber D through the pipes (Z, cZ-the airor gas passing with the water down the discharge conduit B and escapingto the atmosphere at the low level. For an apparatus designed to give agreater degree of vacuum there may be two or more sets of the aforesaidports at differentlevels each provided with a door or valve similar tothat above described and in this case the opening of the lower set ofports brings the water level up to the next highest set of ports; thelatter set of ports are then opened and the lower set of ports closed,this acting being repeated in respect of the other sets of ports (whenthese are provided) until the water level reaches the top of theconduits A and B.

WhatI claim and desire to secure by Letters Patent of the United Statesis A hydraulic apparatus of the class described comprising a damseparating a high level body of water from alow level body of water,said dam having an upwardly extending conduit on one side thereof andcommunicating with the higher level water, a downwardly extendingconduit arranged on the other side of the dam and communicating with thelow level Water, said conduits communicating with each other at theirupper ends and constituting a siphon, a gas chamber having conduitscommunicating With the head of the siphon, said dam having a transverseopening communicating the conduits with each other, and a valve forcontrolling the flow through said opening, said valve havl0 ing a handleextending from one side of the dam soastostart the apparatus Without thenecessity of raising a vacuum by external means.

JENS ORTEN Bovine.

